What is the purpose of the manual lever on this zone valve

System Longevity: Reduces friction and heat buildup within the lubrication circuit

this unit ensures stable thermal contact and accurate resistance-to-temperature conversion across a wide operating range

this specific model is rated for 230V 3-Phase applications only

What probe cable length is supported

Resideo VCZZ1100 Replacement Cartridge 322838-752 What is the purpose ofThe Resideo VCZZ1100 Replacement Cartridge is a critical component for maintaining or restoring VC Series 2 way valves in high demand hydronic and HVAC systems. As a genuine OEM cartridge, it is engineered with a silver spring and designed for linear flow characteristic control, ensuring consistent performance when paired with 2 position or fail safe proportional actuators. This unit features a stainless steel stem and a robust EPDM, Ryton, and Noryl